So you want to move fast over technically challenging ground, boulder hoping, scrambling, climbing, building up a sweat inspite of the chill. In that case you're in for a real adventure that requires real kit - like the Mountain Equipment Men's Switch Jacket. Well insulated with high warmth - low weight, Polartec Alpha wrapping up your torso and Polartec Power Dry in the arms, your body heat will be retained and your perspiration rapidly expelled. Windproofing to the body is assured with the funky and exceptionally lightweight Helium 30. The Mountain Equipment Men's Switch Jacket is a distinct and unique garment for the discerning athlete.